Question about 1987 Chevrolet Corvette

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I Have a 87 corvette that drops fuel pressure if left unstarted for more than a day or two.

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Fuel Pressure Regulator REMOVAL & INSTALLATION 5.7L (VIN 8) Engine NOTE: The pressure regulator and base are factory adjusted and serviced as a complete assembly only. Do not try to remove the regulator cover. 1985-88 VEHICLES

  1. Disconnect the negative battery cable.
  2. Properly relieve the fuel system pressure.
  3. Remove the fuel rail from the vehicle, as outlined earlier in this section.
  4. Remove the front crossover tube retaining attaching screw and crossover tube retainer from the right hand rail side.
  5. Unfasten the retainer-to-base screw assembly and rear crossover tube retaining from the pressure regulator and base assembly.
  6. Separate the left hand fuel rail and plug assembly from the right hand fuel rail and plug assembly.
  7. Remove the bracket-to-rail attaching screw, 2 bracket-to-base screws and the regulator and base bracket.
  8. Unfasten the screw that attaches the fuel outlet tube to the right hand rail.
  9. Remove the base-to-right hand rail assembly. Fig. 1: Typical fuel pressure regulator assembly - 5.7L (VIN 8) engine I Have a 87 corvette that drops fuel pressure if - 91035g26.gif

  10. Twist the regulator and base assembly to the remove it from the fuel outlet tube.
  11. Unplug the base-to-rail connector.
  12. Remove and discard the O-ring seals from the following components, noting the location and sizes of the O-rings to ensure proper placement during installation:
    • Connector
    • Fuel outlet tube
    • Rear crossover tube
    • Front crossover tube
  13. Check the O-rings and sealing surfaces for damage that may prevent proper sealing.
  14. Installation is the reverse of the removal procedure. Tighten the retaining screws to 44 inch lbs. (5 Nm).
  15. Connect the negative battery cable, then turn the ignition to the ON position and check for fuel leaks.

Posted on Nov 07, 2010

Testimonial: "Thanks for the quick reply.I will source parts and follow your instructions.Thanks from an aussie."

  • Duane Wong
    Duane Wong Nov 07, 2010

    The fuel pump might have a leak in it, too.



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